The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 13, 1976
Filed:
Jun. 01, 1973
William R Lamoureux, Kingston, NY (US);
IBM Corporation, Armonk, NY (US);
Abstract
An improved write waveform is provided for a gas panel of the type in which light emitting cells are formed in an ionizable medium at the cross points of a set of horizontally and vertically extending insulated wires. A write pulse of high amplitude is followed by an opposite polarity pulse of an amplitude and width to produce cell wall charge storage from the ionization that accompanies the fall of the high amplitude write pulse. The invention also provides a method and circuit for reading the state of a cell by applying the high amplitude write pulse to a cell and detecting the difference between the smaller current that occurs at the leading edge of the write pulse for a previously written cell and the larger current for an erased cell.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile